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    The CLOUD experiment and the CLOUD gas system (EP-DT-GD Section Activity)

    → Europe/Zurich
    157 (CERN)

    157

    CERN
    Louis-Philippe De Menezes (CERN)
    Description

    EP-DT-GD visit to the CLOUD experiment at the PS (T11, building 157) and its gas system, organized by Louis-Philippe De Menezes from the Gas Team.

    Please, carry with you your Dosimeter.

    This is the first of a series of visits that we will organize within the section to have direct contact with our section’s activities and members, as well as to gain a better understanding of our expertise available and the work we are involved in.

    Registration
    Participants
    Register
    Participants
    • Cléa Fourreaux
    • David Jose Gaspar Marques
    • Eliška Jelínková
    • Eraldo Oliveri
    • Florian Maximilian Brunbauer
    • Karl Jonathan Floethner
    • +5
      • 13:30 → 13:50
        The CERN CLOUD experiment 20m

        CERN Detector Seminar
        by Eva Sommer (University of Vienna (AT))
        Friday 29 Nov 2024

        This talk provided an overview of the CERN CLOUD experiment, which explores the formation of atmospheric aerosol particles from trace gas molecules, with a particular focus on the role of cosmic ray-generated ions. Atmospheric aerosols and their interactions with clouds are critical for regulating Earth's radiative balance, making this research essential for understanding anthropogenic climate change. Over more than a decade of operation, CLOUD has made substantial contributions to this field.

        The centerpiece of the experiment is the CLOUD chamber, the world's cleanest facility for aerosol formation studies. This 27 m3 stainless steel chamber allows precise control of trace gases at parts-per-trillion levels and simulates a wide range of atmospheric conditions, operating between –70°C and 100°C with an accuracy of 0.1°C. Six different light sources are used to trigger various chemical reactions and cosmic rays are simulated using a pion beam from the Proton Synchrotron.

        This talk covered the CLOUD experimental setup, its unique capabilities, and recent major upgrades to the facility, including the FLOw TUbe System (FLOTUS), CHARGE2, and a new light source (LS5). It also addressed the scientific motivation behind the experiment and present key findings that deepen our understanding of atmospheric particle formation and its effects on global climate.

        Speaker: Eva Sommer (University of Vienna (AT))
        CERN Detector Seminar - The CLOUD experiment